Trump is right about an 'Iron Dome' missile shield for the US homeland

During former President Trump’s freewheeling rallies, he regularly brings up his aim to build an "Iron Dome" missile shield for America. It is one of the few itemized priorities in the Republican National Committee platform, which calls for "a great Iron Dome missile defense shield over our entire country." 

Some national defense commentators pounced, deriding the idea as infeasible and calling it "snake oil" and a boondoggle that won’t work. They described the technical characteristics...